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tangare [24]
3 years ago
7

The equation of a circle centered at the origin is x^2+y^2=16. what is the radius of the circle?

Mathematics
1 answer:
vekshin13 years ago
4 0

Answer:

The center is (0,0) and the radius is 4

Step-by-step explanation:

x^2+y^2=16.

The equation of a circle can be written in the form

(x-h)^2+(y-k)^2=r^2  where ( h,k) is the center and r is the radius

(x-0)^2+(y-0)^2=4^2

The center is (0,0) and the radius is 4

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Solve using ELIMINATION (with step by step explanation) Please<br><br> 3x+y=-9<br> y=5x+7
Yuki888 [10]

Answer:

<h2>x = -2 (verified by algebra) ✅</h2>

Step-by-step explanation:

Since we are given the value of y, we can replace it with 5x + 7.

We now have: 3x + 5x + 7 = -9

We can now simplify by adding 3x and 5x to get 8x.

8x + 7 = -9

We can subtract 7

8x = -16

And now, we divide by 8

x = -2

We can check to make sure we are correct

3(-2) + 5 (-2) + 7 = -9

-6 + -10 + 7 = -9

-9 = -9 ✅

7 0
3 years ago
What is the square root of -^54/6+2/3
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3 years ago
Prove that PQR is a straight line
DochEvi [55]
Answer:
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Step-by-step explanation:
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6 0
1 year ago
Two airplanes leave an airport at the same time and travel in opposite directions. One plane travels 60km\h slower than the othe
DanielleElmas [232]

Answer:

4 V + 4 (V - 60) = D    where D is distance apart after 4 hrs

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6 0
2 years ago
Please help!
Alinara [238K]
The area of the enclosed space is given by the equation
(6+2x)² = 169

We can take the square root of both sides, since 169 is a perfect square:
√(6+2x)² = √169
6 + 2x = 13

Subtract 6 from each side:
6 + 2x - 6 = 13 - 6
2x = 7

Divide both sides by 2:
2x/2 = 7/2
x = 3.5
8 0
3 years ago
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